MICRO-EPSILON turboSPEED DZ140, Operating Instructions Manual

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Page 29
Troubleshooting
turboSPEED DZ140
6. Troubleshooting
Try the following options if during the measurements (possibly also only at different speeds) faults occur
despite the above noted points:
Adjust the sensitivity (mode switch).
Connect the controller with its own power supply.
Alternatively, you may also perform a galvanic separation.
If you are using the
RAW SIGNAL
via the BNC socket, disconnect and plug the female connector with
the supplied protective cap.
If you are using measuring devices (e.g. an oscilloscope), in which the signal ground (GND) is connec-
ted to the protective earth conductor of the mains socket, add a galvanic separation (e.g. by means of
an isolating transformer).
Make sure that any possible interference from other components are minimized (e.g. by shielding).
Connect the signal ground (GND) with the housing ground (PE), e.g. by clamping the supplied multi
corrugated spring ring between controller housing and BNC cap (or BNC connector), see Fig. 25 , see
Fig. 26 , see Fig. 27 .
i
Note that the spring ring rests entire surface on both sides.
First remove any contamination on the contact surfaces of the fire ring (housing, BNC plug, etc.)
> Bad connection between GND and PE
NOTICE